a916b47e23
Assigning a precedence to a keyword that isn't a kind of expression operator is rather dangerous, because it might mask grammar ambiguities that we'd rather know about. It's much safer to attach explicit precedences to individual rules, which will affect the behavior of only that one rule. Moreover, when we do have to give a precedence to a non-operator keyword, we should try to give it the same precedence as IDENT, thereby reducing the risk of surprising side-effects. Apply this hard-won knowledge to SET (which I misassigned ages ago in commit 2647ad658) and some SQL/JSON-related productions (from commits 6ee30209a, 71bfd1543). Patch HEAD only, since there's no evidence of actual bugs here. Discussion: https://postgr.es/m/CADT4RqBPdbsZW7HS1jJP319TMRHs1hzUiP=iRJYR6UqgHCrgNQ@mail.gmail.com
PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.